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HT4049: Apple Computers and Displays: Powering peripherals through USB

Learn about Apple Computers and Displays: Powering peripherals through USB

HT4049 USB faulty?

219 Views 5 Replies Latest reply: May 9, 2013 10:44 AM by Lark.Landon RSS
Dean4e Calculating status...
Currently Being Moderated
May 9, 2013 10:11 AM

To prevent damaging your computer, the USB device drawing too much power has been disabled. Other devices may have also been disabled. When you disconnect the device drawing too much power, your other USB devices will be enabled again.

now this happens ever time i turn on the computer andno i dont have anything plugged into the usb any of them...also is there such a device as firewire from the macbook pro 13" to a hub that can access usb drives etc?

Hardware Overview: bought Feb 2010

 

Software  Mac OS X Lion 10.7.5 (11G63)

 

  Model Name:          MacBook Pro

  Model Identifier:          MacBookPro7,1

  Processor Name:          Intel Core 2 Duo

  Processor Speed:          2.4 GHz

  Number of Processors:          1

  Total Number of Cores:          2

  L2 Cache:          3 MB

  Memory:          4 GB

  Bus Speed:          1.07 GHz

  Boot ROM Version:          MBP71.0039.B0B

  SMC Version (system):          1.62f7

  Serial Number (system):          W8******ATM

  Hardware UUID:          ****

  Sudden Motion Sensor:

  State:          Enabled

 

<Edited By Host>

iPod touch, iOS 4.2
  • Baby Boomer (USofA) Level 9 Level 9 (55,540 points)
    Currently Being Moderated
    May 9, 2013 10:09 AM (in response to Dean4e)

    Are you using a powered usb device?  If not, you should be.

     

     

     

     

     

     

     

     

     

     

     

    2ue5vgy.gif

  • Baby Boomer (USofA) Level 9 Level 9 (55,540 points)
    Currently Being Moderated
    May 9, 2013 10:23 AM (in response to Dean4e)

    Dean4e wrote:

     

    nothing plugged into the mac book

     

    You previously stated:

    this happens ever time i turn on the computer andno i dont have anything plugged into the usb

     

    When you get the usb error message, you are now saying no devices including the usb hub are connected to your MBP?

     

     

     

     

     

     

     

     

     

    2ue5vgy.gif

    iMac (3.2 GHz, Intel Core i5-2013), OS X Mountain Lion (10.8.3), Fusion Drive-3.12TB, 32GB RAM
  • Lark.Landon Calculating status...
    Currently Being Moderated
    May 9, 2013 10:44 AM (in response to Dean4e)
    1. Shut down the computer.
    2. Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
    3. On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
    4. Release all the keys and the power button at the same time.
    5. Press the power button to turn on the computer. 
      Note
      : The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.

     

     

    System Management Controller Reset

    HT3964

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